Collapsible window blinds structure

ABSTRACT

A collapible window blinds structure comprises a blind body, a lift cord set, and a head rail assembly wherein the blind body has a fastening portion at the top edge, and limiting hoops evenly spaced and fixed at the rear side surface for the running of lift cords there-through to wind around pulley seats and a positioning pulley unit respectively. The head rail assembly includes multiple connection rods and linking elements flexibly assembled according to the size of a widow frame. Each connection rod has a vertical thru-hole for the registration of a fitting portion of the pulley seats and the positioning pulley unit, and a fastened portion at a vertical side surface for the attachment of the fastening portion of the blind body thereto. Therefore, the head rail assembly and the blind body can be easily stacked and bundled up into smaller volume for convenient carriage and the storage.

BACKGROUND OF THE INVENTION

The present invention is related to a collapsible window blinds structure, comprising a blind body, a lift cord set, and a head rail assembly wherein the lift cord set guiding through the blind body is detachably mounted to the head rail assembly that can also be dismantled into separate pieces of connection rods and linking elements so that the head rail assembly and the blind body can be easily collapsed and stacked to be bundled up into smaller volume, facilitating the carriage and storage of the window blind as well as saving the material of package to achieve the economical efficiency thereof.

Please refer to FIG. 1. A conventional window blinds structure includes a window blind 10 made up of a head rail 11 and a blind body 12 directly attached to the underside of the head rail 11 wherein the head rail 11 has a pulley seat 13 mounted at one end therein for the winding of a lift cord 14 to control the collecting or expanding operation of the blind body 12 thereby.

There are some drawbacks to such conventional window blind structure. Most of all, the head rail 11 of the window blind 10 is always tailor-made into a certain length to fit to the size of a certain window frame, and the lift cord 14 is fixedly attached to the bottom edge of the blind body 12 and guided to wind around the pulley seat 13 of the head rail 1 1. Therefore, in package, the blind body 12 and the lift cord 14, determined by the size of the head rail 11, is restrained to wrap around the head rail 11 and bundle up into awkwardly bulky volume as shown in FIG. 2, which not only makes the storage thereof difficult to be done, but also increases the cost of package and carriage thereof. Thus, the conventional window blind 10 is quite uneconomical and uncompetitive on the market.

SUMMARY OF THE PRESENT INVENTION

It is, therefore, the primary purpose of the present invention to provide a collapsible window blinds structure, comprising a blind body, a lift cord set, and a head rail assembly wherein the lift cord set guiding through the blind body is detachably mounted to the head rail assembly that can also be conveniently dismantled into separate pieces of connection rods and linking elements so that the head rail assembly and the blind body can be easily collapsed and stacked to be bundled up into smaller volume without being restrained to wrap around the length of the conventional head rail above, facilitating the carriage and the storage of the window blind thereof as well as saving the material of package to achieve the economical efficiency thereof.

It is, therefore, the second purpose of the present invention to provide a collapsible window blinds structure, comprising a blind body, a lift cord set, and a head rail assembly wherein the head rail assembly is made up of connection rods and linking elements reciprocally joined to each other so that the amount of the connection rods and the linking elements can be flexibly increased or reduced, depending on the size of the window frame or blind body without the head rail being individually tailor-made to fit to different window frames and blind bodies, economically saving the cost of production to boost the competitive power thereof on the market as well as to achieve unlimited versatile assembly thereof.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a conventional blind body unfolded in expansion.

FIG. 2 is a diagram showing the conventional window blind bundled up for storage.

FIG. 3 is an exploded perspective view of the present invention.

FIG. 4 is an assembled perspective view of the present invention.

FIG. 5 is an assembled cross sectional view of the present invention.

FIG. 6 is a diagram showing the present invention completely stacked up for storage.

FIG. 7 is an assembled perspective view of another embodiment of the present invention.

FIG. 8 is an exploded perspective view of another head rail of the present invention.

FIG. 9 is an assembled cross sectional view of a third head rail of the present invention.

FIG. 10 is an assembled cross sectional view of a fourth head rail of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Please refer to FIG. 3 showing an exploded perspective view of the present invention. The present invention is related to a collapsible window blinds structure, comprising a blind body 20, a lift cord set 30, and a head rail assembly 40 wherein the blind body 20 has a fastening portion 21 made up of hook-side fasteners disposed at the top edge thereon, and a plurality of limiting hoops 22 evenly spaced and fixed in vertical lines at the rear side surface thereon. The lift cord set 30 is composed of lift cords 31, pulley seats 32 and a positioning pulley unit 33 wherein the lift cords 31 are guided through the limiting hoops 22 of the blind body 20 to wind around the pulley seats 32 and the positioning pulley unit 33 and fixed to the bottommost limiting hoops 22 thereof respectively. In this way, the blind body 20 is raised or lowered according to the collecting or expanding operation of the lift cords 31 thereby. The top edges of the pulley seats 32 and the positioning pulley unit 33 are respectively disposed a protrusive stepwise fitting portion 321, 331 made up of a narrower guidance section 3211, 3311, and a wider abutted section 3212, 3312. And a hanging element 322, 332 is attached to the top edge of the fitting portion 321, 331 thereof. The head rail assembly 40 includes a plurality of connection rods 41 and linking elements 42 wherein the connection rods 41 can be made into cylindrical or rectangular-shaped rods each having a rectangular thru-hole 411 disposed at the top plane surface cutting vertically downwards through to the bottom surface thereof. The rectangular thru-hole 411 has a width slightly smaller than that of the abutted section 3212, 3312 thereof. The interior of the connection rod 41 is made in a hollow shape with a set of coupling holes 412 disposed at both ends in communication with each other thereof, and one vertical side surface thereon is disposed a fastened portion 413 made up of loop-side fasteners. Both lateral end edges of the connection rod 41 are made into a plane smooth abutment facet 414 respectively. The linking element 42, reciprocally matched to the coupling hole 412 of the connection rod 41, is made into a column-like shape with an arcuate guiding facet 421 defining each end edge thereon.

Please refer to FIG. 4 showing an assembled perspective view of the present invention. The coupling holes 412 of two connection rods 41 are respectively led along the guiding facets 421 disposed at both ends of each linking element 42 so as to engage the connection rods 41 with the linking element 42 till both adjacent abutment facets 414 of the two connection rods 41 are correspondingly joined and abutted tight to each other. Another linking element 42 and a connection rod 41 are applied to the coupling hole 412 disposed at one opening end of the conjoined connection rods 41 thereof, permitting the fastened portions 413 of the connection rods 41 to sequentially join with one another and form an even flat surface so as to conceal the linking elements 42 therein, completing the assembly of the head rail assembly 40 thereby. The amount of the connection rods 41 and the linking elements 42 of the head rail assembly 40 can be flexibly increased or reduced, depending on the size of a window frame or the blind body 20 thereof so that the fastening portion 21 of the blind body 20 can be uniformly attached to the fastened portion 413 of each connection rod 41 and the blind body 20 be suspended accurately downwards from the head rail assembly 40 as a whole set thereby. And, due to the uninterrupted continuity formed by the fastening portion 21 thereof, each connection rod 41 is stably positioned and jointed to each other without the risk of detaching from the linking elements 42 thereof. Then, the fitting portions 321, 331 of the pulley seats 32 and the positioning pulley unit 33 of the lift cord set 30 are respectively guided from bottom to top to mount into the thru holes 411 of the connection rod 41 till each guidance section 3211, 3311 thereof extends outwards at the upper side of the connection rod 41 thereof. Meanwhile, via the design of the thru-hole 411 slightly smaller than the abutted section 3212, 3312 thereof, the abutted section 3212, 3312 is forced to precisely fit into the thru-hole 411 and stably positioned therein via a clamping force formed with the inner wall of the thru-hole 411, permitting the lift cords 31 to dangle straight downwards in parallel with the blind body 20 as shown in FIG. 5 so as to easily raise or lower the blind body 20 in smooth operation thereby.

Please refer to FIG. 6 showing the window blind of the present invention completely stacked up for storage. The present invention can be easily collapsed for package or storage thereof. The lift cord set 30 guided through the blind body 20 is detachably mounted to the head rail assembly 40 that, made up of the connection rods 41 and the linking elements 42, can also be conveniently dismantled into separate pieces. Therefore, the blind body 20 along with the lift cord set 30 detached from the head rail assembly 40 thereof can be collected and stacked up into smaller size. And the connection rods 41 and the linking elements 42 respectively dismantled can be juxtaposed side by side and put into the completely stacked-up blind body 20, permitting the window blind to be bundled up into small volume without the blind body wrapping around the full-length head rail of the above-mentioned conventional window blinds so as to save the material of package for easy carriage as well as convenient storage thereof.

Please refer to FIG. 7 showing another assembled perspective view of the present invention. The lift cords 31, the pulley seats 32, and the positioning pulley unit 33 of the lift cord set 30 can be increased or reduced to at least two rows according to the position of the limiting hoops 22 of the blind body 20.

Please refer to FIG. 8 showing an exploded perspective view of another head rail assembly of the present invention. The coupling holes 412 of the connection rods 41 and the linking elements 42 of the head rail assembly 40 thereof can also be identically made into a rectangular shape for corresponding registration to each other thereby, permitting each connection rod 41 to stably engage with and restrain by the linking elements 42 in position thereof. Besides, the guiding facet 421 defining each end edge of the linking element 42 can be shaped in invert-cornered configuration.

Please refer to FIG. 9 showing an assembled cross sectional view of a third head rail assembly of the present invention. The coupling holes 412 of the connection rods 41 and the linking elements 42 of the head rail assembly 40 thereof can also be made into screw-threaded sections for secure registration to each other thereby.

Please refer to FIG. 10 showing an assembled cross sectional view of a fourth head rail assembly of the present invention. Each coupling hole 412 of the connection rod 41 can also have a stop seat 4121 protruding at the inner wall thereon for the abutment of the end surface of the linking element 42 thereby, permitting both end edges of the linking element 42 to evenly accommodate and mount to the coupling holes 412 of the connection rod 42 therein so as to ensure an accurate assembly thereby. 

1. A collapsible window blinds structure, comprising a blind body, a lift cord set, and a head rail assembly wherein the blind body has a fastening portion disposed at the top edge thereon, and a plurality of limiting hoops evenly spaced and fixed in vertical lines at the rear side surface thereon; the lift cord set is composed of lift cords, pulley seats and a positioning pulley unit wherein the lift cords are guided through the limiting hoops of the blind body to wind around the pulley seats and the positioning pulley unit and fixed to the bottommost limiting hoops thereof respectively, and the top edges of the pulley seats and the positioning pulley unit are respectively disposed a protrusive fitting portion; the head rail assembly includes a plurality of connection rods and linking elements wherein each connection rod has a thru-hole disposed at the top plane surface cutting vertically downwards through to the bottom surface thereof, and the fitting portion of the pulley seat and the positioning pulley unit thereof can be reciprocally mounted to the thru-hole of the connection rod for location thereby; the connection rod also has a set of coupling holes disposed at both ends for the registration of the linking elements therewith respectively, and a fastened portion defining one vertical side surface thereon for the attachment of the fastening portion of the blind body thereto; therefore, via the collapsible design of the window blinds wherein the lift cord set guiding through the blind body is detachably mounted to the head rail assembly that can also be conveniently dismantled into separate pieces of the connection rods and linking elements, the head rail assembly and the blind body can be conveniently stacked and bundled up into smaller volume, facilitating the carriage and the storage the window blind thereof as well as saving the material of package to achieve the economical efficiency thereof.
 2. The collapsible window blinds structure as claimed in claim 1 wherein the fastening portion of the blind body can be made up of hook-side fasteners.
 3. The collapsible window blinds structure as claimed in claim 1 wherein the protrusive fitting portion of the pulley seats and the positioning pulley unit can be shaped in a stepwise configuration made up of a narrower guidance section and a wider abutted section thereof.
 4. The collapsible window blinds structure as claimed in claim 1 wherein the top side of the fitting portion of each pulley seat and the positioning pulley unit has a hanging element attached thereto.
 5. The collapsible window blinds structure as claimed in claim 1 wherein the connection rod thereof can be shaped in cylindrical configuration.
 6. The collapsible window blinds structure as claimed in claim 1 wherein the connection rod thereof can also be shaped in rectangular configuration.
 7. The collapsible window blinds structure as claimed in claim 1 wherein the thru-hole of the connection rod can be made in a rectangular shape correspondingly matched to the protrusive fitting portion of the pulley seats and the positioning pulley unit thereof.
 8. The collapsible window blinds structure as claimed in claim 1 wherein the interior of the connection rod can be in a hollow-like configuration.
 9. The collapsible window blinds structure as claimed in claim 1 wherein the fastened portion of the connection rod can be made up of loop-side fasteners.
 10. The collapsible window blinds structure as claimed in claim 1 wherein both lateral end edges of the connection rod can be defined by a plane smooth abutment facet thereon respectively.
 11. The collapsible window blinds structure as claimed in claim 1 wherein the linking element is identically shaped in column-like configuration to fit to the coupling hole of the connection rod thereby.
 12. The collapsible window blinds structure as claimed in claim 1 wherein both end edges of the linking element can be defined by an arcuate guiding facet thereon respectively.
 13. The collapsible window blinds structure as claimed in claim 1 wherein the amount of the lift cords, the pulley seats, and the positioning pulley unit of the lift cord set thereof can be flexibly increased or reduced, depending on the position of the limiting hoops of the blind body.
 14. The collapsible window blinds structure as claimed in claim 1 wherein the coupling holes of the connection rod and the linking element can also be identically shaped in rectangular configuration to correspondingly fit to each other, permitting each connection rod to be restrained by the engaged linking element for secure positioning thereby.
 15. The collapsible window blinds structure as claimed in claim 1 wherein the guiding facet defining both end edges of the linking element can also be made in invert-cornered shape.
 16. The collapsible window blinds structure as claimed in claim 1 wherein the coupling holes of the connection rod and the linking element thereof can also have screw-threaded sections disposed thereon for secure registration to each other thereby.
 17. The collapsible window blinds structure as claimed in claim 1 wherein each coupling hole of the connection rod can also have a stop seat protruding at the inner wall thereon for the abutment of the end surface of the linking element thereby, permitting both end edges of the linking element to evenly mount to the coupling holes of the connection rod therein so as to ensure an accurate assembly thereby. 